Bubble blowing device



Feb. 26, 1952 J. c. SCOTT BUBBLE BLOWING DEVICE 2 SHEETS--SHEET 1 F iled Oct. 15, 1948 Jose/w C. 5007 INVENTOR.

ATTOPA/EY Feb. 26, 1952 J. c. SCOTT BUBBLE BLOWING DEVICE 2 SHEETSSHEET 2 Filed Oct. 15, 1948 INVENTOR.

A TTOEME 5 Patented Feb. 26,1952

,UNITED STATES PATENT OFFICE BUBBLE BLOWING DEVICE Joseph C. Scott, Charlotte, N. 0. Application October 13, 1948, Serial No. 54,236

This invention relates to a toy automatic bubble blowing apparatus and has for its primary object that of providing a manually operated air gun, in the discharge end of which a reservoir for containing a suitable bubble forming solution is mounted and into which a looped wand is adapted to be passed, the wand being oscillatably mounted in the reservoir, and upon releasing the wand, spring means will urge the wand out of the bubble forming solution, and into alignment with the nozzle at the discharge end of the manually operated air gun and, upon operating the manually operated air gun, the film of solution that has been deposited on the wand will be formed into bubbles by the blast of air passing through the loop in the wand.

It is another object of this invention to provide a bubble forming device comprising a hand operated compressed air pump having a discharge nozzle at one end thereof and to provide a reservoir secured to the discharge end of the compressed air pump, in off center relation thereto, for containing a suitable film forming solution and to provide a wand eccentrically mounted relative to the discharge end of the compressed air pump and being oscillatably mounted in one of the walls of the reservoir and to provide a spring loaded plunger mounted on one side of the compressed air pump which is adapted to engage an extended portion of the wand projecting out of the reservoir to thereby cause the wand to move into the bubble forming solution upon manually pressing the plunger in one direction and whereby upon releasing the plunger the wand will be urged upwardly by a suitable spring means, at which time the wand will be covered with the film forming solution and upon manually operating the pump the compressed air will pass through the wand to thereby form a plurality of bubbles.

Some of the objects of the invention having been stated, other objects will appear as the description proceeds, when taken in connection with the accompanying drawings, in which Figure 1 is a side elevation of the bubble forming device;

Figure 2 is a top plan view of the device;

Figure 3 is a vertical sectional view showing a suitable coupling means and is taken substantially along the line 3-3 in Figure 2;

Figure 4 is an elevation with parts in section and with parts being broken away and is taken substantially along the line 4-4 in Figure 1;

Figure 5 is a vertical sectional view taken along the line 5-5 in Figure 1;

Figure 6 is a vertical sectional view taken along the line 6-5 in Figure 1;

Figure 7 is a vertical sectional view taken along the line I-'I in Figure 2.

Referring more specifically to the drawings, the numeral I indicates the cylinder of a suit- 1 Claim. (Cl. 46-8) able hand operated compressed air gun or pump and this cylinder is capped at its right-hand and left-hand ends, in Figures 1, 2 and 7, as at I I and I2, respectively.

Slidably penetrating the cap I I is a suitable piston rod I3 having a handle I l loosely mounted on the right-hand end thereof in Figures 1, 2 and 7 and the piston rod I3 is crimped as at I and a'washer I6 is provided on each side of the handle I4 on the piston rod I3 and threadably mounted on the right-hand end of the piston rod I3 is a nut I! to thus secure the handle I4 against the crimped portion I 5 of the piston rod I3. The left-hand end of the piston rod in Figure 7 has a piston mounted thereon and this piston rod I3 is crimped as at 2|, the crimped portion 2| being engaged by a suitable Washer 22 and a suitable cup washer 23 being provided between the piston 20 and the washer 22, on the piston rod I3. The left-hand end of the piston rod I3 has a nut 24 threadably mounted thereon to thus secure the piston 26 and associated parts against the crimped portion 2| of the piston rod l3. The cup washer 23 is mounted for sliding movement within the cylinder I ii.

The cap I2, at the left-hand end of the cylinder II] in Figures 1, 2 and 1, has a nozzle 25 threadably mounted therein which has a longitudinally extending bore 26 therein. The nozzle 25 extends outwardly from the cap I2 and slidably penetrates an upwardly extending portion 21 of a reservoir broadly designated at 30. The nozzle 25 has a nut 3| threadably mounted on the left-hand end thereof in Figure 7 for securing the compressed air pump to the portion 27 of the reservoir 30.

The reservoir 30 may be of any desired material and is shown as being of a molded plastic.

material in Figure 7, and comprises side Walls 3| and front and rear walls 32 and 33, respectively, and a bottom 29. A cover member 3 5 is adapted to be pressed lightly onto the reservoir 30. The cover 34 has an elongated slot 35 therein and through which the wand to be presently described is adapted to pass. A suitable bubble forming solution 36 is provided in the reservoir 30.

Rotatably mounted in the rear wall 33 of the reservoir 30; that is, adjacent the discharge and of the compressed air pump, is a laterally extending portion 40 of a wand GI having an opening 42 therein. The laterally extending portion of the wand is disposed at right angles to the main portion of the wand il. Suitably coupled to the laterally extending portion til, as at it, is a lever arm 45 which is bent inwardly and is flattened as at 46 and this lever arm 45 is rotatably mounted in a bearing member til secured, as by welding, to the cylinder I0.

A spring perch 50 is secured, as by welding, to

a medial portion of the lever arm 55 and has one end of a tension spring 5! connected thereto, the other end of which is connected to a spring perch 52 projecting from the cylinder in Figure 5. The tension spring normally urges the lever arm 45 in a clockwise direction in Figure 5 and will correspondingly urge the wand {ii to the solid line position shown in Figure 6; that is, with the opening 42 of the wand 41 in alignment with the discharge end of the nozzle 25.

The wand 4| is prevented from moving upwardly beyond the solid line position shown in Figure 6 by the lower end of a plunger 55, to be presently described, which engages the flattened portion 45 of the lever arm 45 (Figures 1 and 5-).

The plunger 55 is mounted for vertical sliding movement in a guide block 56 secured, as by welding, to the cylinder 16 and projecting outwardly therefrom. The plunger-55 has a headed portion 60 integral therewith and a suitable compression spring 6| surrounds the upper portion of the plunger 55 and" engages the headed portion 68 at its upper end and the guide member 55 at its lower end to thus normally urge the plunger 55 upwardly in Figure 5. However, the plunger 55 has a collar 62 ecured thereon, as by a pressed fit, and this'collar intermittently engages the lower surface or the guide block 56, thus restricting upward'movem ent of the plunger 55 as well as to prevent'th'e M from moving in a clockwise direction beyond the solid line position shown in Figure tf.

Method of operation The cover 3 3 may be removed from the reservoir 30 for pouring the desired amount of bubble forming solution 36 into the reservoir 30, as shown in Figure 7, or the solution 36 may be poured into the reservoir 30 through the elongated opening 35 through which the wand d! is adapted to pass. The cylinder 19 is held in one hand by an operator and the handle [4- is grasped by the other hand. The piston 20 is then moved from left to right in Figure 7 until the crimped portion 2| of the piston rod l3 engages the cap H. The headed portion 60 of the plunger 55 is then pressed downwardly by the thumb of the hand holding the cylinder, and this will cause the wand to move in a counterclockwise direction to the dotted line position shown in Figure 6 to thus deposit a film of the bubble forming solution over the opening 12 of the wand ill.

The plunger 55 is then released and the compression spring Bl will cause the plunger to move upwardly while the tension spring 5| will cause the Wand 4! to move in a clockwise direction in Figure 6 to the solid line position.

The handle I4 is then moved in such a manner as to cause the piston 26 to force air through the nozzle 25 and this compressed air will pass through the opening 42 in the wand 4| to thus form the bubbles.

In the drawings and specification there has been set forth. a preferred embodiment of the invention, and although specific terms are employed, they are used in a generic and descriptive sense only, and not for purposes of limitation, the scope of the invention being defined in the claim.

I claim:

Apparatus for forming bubbles from a film forming liquid comprising a cylinder, a piston mounted for longitudinal sliding movement in the cylinder, a piston rod connected to the cylinder and extending through one end of the same, a handle on the free end of the piston rod which is adapted to be grasped by an operator for moving the piston relative to the cylinder, a nozzle in the end of the cylinder opposite from the end through which the piston rod projects, a reser-- voir having an upwardly extending portion integ-ral therewith, said upwardly extending portion being penetrated by the nozzle for securing the reservoir to the cylinder, a wand disposed in the reservoir and having a longitudinally extending portion integral therewith, said longitudinally extending portion being rotatably mounted in the wall of the reservoir adjacent the cylinder, said wand having an opening therein, spring means disposed between the cylinder and the longitudinally extending portion of the wand for urging the wand into a position adjacent the discharge end of the nozzle and exteriorly of the reservoir, said longitudinally extending portion having a"flattened off-set portion integral therewith, a plunger engaging the ofiset portion of the longitudinally extending portion of the wand whereby upon application of pressure to the plunger in one direction, the free end of the wand will be moved into the film forming liquid and upon release of the plunger the free end of the wand will be moved into alignment with the discharge end of the nozzle by the spring means and whereby upon manually moving the piston in a direction towards the nozzle in the cylinder a stream of air will pass through the same to thus cause the stream of. air to pass through the opening in the wand to dislodge the film therefrom and to form a plurality of bubbles.

. JOSEPH C. SCOTT.

. REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES, PATENTS Number Name Date D. 155,344 Johanson Sept. 27,1949 710,814 Steinhauser Oct. 7, 1902, 1,031,526 Cloud July 2, 1912 1,232,202 Brown July 3, 1917 1,397,162 Bobbins Nov. 15-, 1921 1,429,656 Stonebridge Sept. 19-, 1922 1,919,094 Cuchran July 18, 1933- 2,315,242 Briggs et a1 Ma 30,1943 2,393,039 Gilchrist Jan. 15, 1946 2,518,627 Lorenz Aug. 15 1950 FOREIGN PATENTS Number Country Date 1,547 Great Britain 1913 329,233 Great Britain May 15, 1930 

